robbins



-June 9, 1936. w. H. RoBBiNs Re. 20,002

POLISHING DEVICE Original Filed May 22, 1933 2 Sheets-Sheet 1 Jmewlrf/WILL/AM H. Rom,

"awww June 9, 19736.

w, H. RoBBiNs POLISHING DEVICE Original Filed May 22, 1955 2Sheets-Sheet 2 #mm/auna v l Y corporation .of Ohio My invention relatesto steel wool and particularly to pads or buffers made from steel wool,with or Without other materials.

steel wool pad having a toroidal or annular shape.

It is another object making an annular or.ringshaped steel which iseconomical and eficlent.- r

It is another object to provide an' annular steel wool pad which iscomposed of a, plurality of separate portions which in assembly form` aring-j shapedpad. Y f

My object is, to provide an article oimanufac-` ture for" use on rotarymachines ron which this annular steel wool pad is mounted: and in suchanarrangement the steel wool strands,cwhich are long continuously woundstrands, aret arranged in elongated loops which lie in axial planes.

Thereore, the strands are substantially at 2 0 right angles tothedirection of movement of the 'rotary pad. A number of'these radialstrands are superimposed one over deep long-wearing cushion which givesan even abrasive effect upon the surface engaged.

In the drawings:-

Figure l is a perspective view wool pad1 thereof.

Figure 2 is a section'through the ring-shaped steel wool pad and the thepad is mounted. t Figure 3 is an enlargedV cross-secticnalview throughthe pad Aof Figure 2, showing the internal construction of thering-shaped pad.

35 Figure 4 is a, modified form of the steel wool pad, having separatedportions which unite in assembly to form a ring-shaped pad.

Figure 5 is a perspective view of'the devices shown in Figure 2.

Figure 6 is a side elevation of the pad according to Figure 4 mountedon' a rotary head similar to that shown in Figure 2.

Referring to the drawings in detail, I is a mandrel which is capable ofbeing rotated. Along one side of this mandrel runs a longitudinal groove2 through which cords 3 loosely pass.

The mandrel I is mounted in a rotatory apparatus and the cords 3areplaced in the slot 2. Steel wool ribbon 4 is then wound upon the mandrelI as the latter is rotated, and builds itself up in layers as shown inFigure 3.

This steel wool ribbon does not in itself form a part of this invention:it may be fed to the mandrel from drums upon which it is stored and fromwhich it is unrolled much like tape or ribbon the other and `form a t inFigure 3.

of one of proved steel wool pads during the manufacturel rotary headupon'which f.

' original No. 1.988,335, dated Y serial No. 372,272, may 22,

I'fol-reissue April 4, 1936,v Serial No. 72.792

Afrom a spool, or` roller bandageA from a roll of that I to provide amethod of January 15, 1935,v 1933. Application material. 'I'hemanufacture of this steel wool c v ribbon is well known to those skilledin the art. It is an objectof my invention to provide aY i Thesuccessive layersxof steel wool ribbon grad- .ua'ly ybuild themselves upinto a cylinder-like roll 5 of steel Woolf Whenr this has reached asatisfactory diameter as shown in Figure 1 the rotation of the machineishalted. The mandrel is then removed from the machine and carefullywithdrawn fromfthe roll 5, leaving the cords 3 in their position passingthrough the hole in the center of the steel wool roll- The cylindricalroll t of'steel wool is now swung into annular or toroidal form about ahead I0 by pulling the opposite ends of thecords 3 together and tyingthem rmly in a knot: The steel wool nowtakes a ringLshaped form 1, andthe cords 3 occupy a circular position.

If' it is desired to use the annular steel wool pad I von arotatingplate, it may be held thereon by any suitable means and pressed downagainst the plate until it has the oval cross section shown [A' modifiedform of annular steel wool pad is ,shown in Figure 4. It consists of aplurality of separate portions which in assembly are placed end to endto form a ring or torus. These sections may be wound separately onindependent mandrels in the mannerthe several sections4 wound eithersuccessively or simultaneously on a common mandrel I. The sections arethen vunited by tying the cords 3 in the same manner as previouslydescribed. It is also obvious that asteel wool roli 5 may be wound onalong mandrel and then cut up into sections which are thereafterassembled in annular form.

previously described, or f a new cord being threaded through the centersof f the sections in bead-like fashion, vidual sections ofcord may beobvious manner.

or else the indireunited in an 4My annular steel wool pad,.in either ofits forms previously described, is particularly adapted to use in aportable rotating machine. vThe pad is held by a. head I0 mounted on theshaft II by the threaded connection I2 and fitting its central aperturein any convenient manner. The shaft I I is rotatably supported on thebracket Il by the antifriction bearings I4 and is then adapted l to berotated by the electric motor or other power source applied to themachine such as by the belt l5 engaging the pulley I8 keyed to the shaftII. The disintegration of the pad through centrifugal force is preventedby the strands being held together by their annularly woundconstruction. 'I'he hollow construction of the pad permit! thedistribution of the steel wool along the lines of the greatest work,whereas a solid pad wears unevenly. being greater on the periphery,where the linear speed is greater, than on the inner edge of the pad.Used in this manner, my annular steel wool pad finds very valuable andimportant applications to cleaning, scouring, or partially resurfacingoors, decks, tables, counters and other like surfaces, especially inhospitals, schools, factoriesland ships. The creation of flying dust, asoccurs in other types of re-surfacing or scouring machines is greatlyreduced by the use of my annular steel wool pad and may be eliminatedentirely by combining. with the rotary machine, adust-collecting devicesuch as the vacuum suction mechanism well known in the art.

The steel wool pad indicated in Figure 4 has been illustratedas beingmounted on a rotary head in Figure 6. The rotary head indicated lnFigure 2 has been used as a mounting for the pad, the same numerals usedin the description of Figure 2 indicate identical parts in Figure 6.

It will be understood that I desire to comprehend within my inventionsuch modifications as may be necessary to adapt it to varyingcondiltions and uses.

Having thus fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. A new article of manufacture for polishing. comprising a rotary head,a ring-shaped steel wool pad having an aperture receiving said head.said pad being composed of layers of steel wool ribbon, the strands ofsteel wool comprising loops lying in axial planes of the ring.

2. A new article of manufacture for polishing, comprising a ring-shapedsteel wool pad having y ao,ooa

anaperture adaptedtobeplaceduponarotary head, said pad being composed oflayers of steel wool ribbon wound in spiral superposition on oneanother,` the strands of steel wool comprising I loops lying in axialplanes of the ring.

3. A new article of manufacture for polishing, comprising a rotary head,a ring-shaped steel wool pad mounted on said head, said pad beingcomposed of layers of steel wool ribbon wound in spiral superposition onone another, the strands of steel wool comprising loops lying in axialplanes of the-ring.

4. A new article of manufacture for polishing. comprising a rotary head,a ring-shaped steel wool pad driven by said.head and substantiallyco-axiai therewith; said pad being composed of a plurality of sectionsyarranged end to end in an annular form, and having a central ap-`erture, said pad being composed of layers of steel wool ribbon, thestrands of steel wool comprising loops lying in axial planes of thering.

5. A new article of manufacture for polishing, comprising a ring-shapedsteel wool pad adapted to be rotated about its axis, said pad beingcomposed of layers of steel wool' ribbon, the strands `oi steel woolcomprising loops lying in axial planes of the ring.

, 6. A new articleof manufacture for polishing, comprising a ring-shapedsteel wool pad adapted to be rotated about its axis, said pad being ovalin cross section with the longer diameter of the section disposedradially of the ring and being composed of layers of steel wool ribbon,the strands of steel wool comprising loops lying in axial planes of thering.

. WILLIAM H. RJOBBINB.

